Higgsfield API Key Guide: 33-Day Unlimited Seedance 2.5 & Free Tier

Is Higgsfield Free? The Short Answer

Yes — for a limited time. Higgsfield is running a 33-Day Unlimited Seedance 2.5 campaign: subscribing to Plus or above (from $47/mo billed annually) grants up to 33 days of unlimited Seedance 2.5 video generation at 720p, with a separate unlimited window for Seedance 2.0 at up to 1080p. A Free tier (limited use) is available to every new account, and the MCP/CLI pages advertise a 3-day free trial plan.

Higgsfield Seedance 2.5 33-day Unlimited offer banner
New Seedance 2.5 Unlimited for 33 days with 30% OFF

Why Choose Higgsfield & Seedance 2.5?

  • Seedance 2.5: ByteDance's most controllable AI video model — 30 seconds in one take, up to 50 multimodal references, native audio, and region-level editing.
  • 33 days of unlimited generation: no credits deducted while the window is active (720p, clip length 10-30s by plan tier).
  • Separate Seedance 2.0 unlimited window at up to 1080p on Plus/Ultra plans.
  • Official REST API (platform.higgsfield.ai) with a Python SDK for programmatic access.

Step-by-Step Signup & API Key Setup

Step 1: Open https://higgsfield.ai/pricing in your browser. You'll see the current campaign banner (up to 33 days of unlimited Seedance 2.5, often bundled with a 30% OFF discount on annual plans).

Higgsfield pricing page with Free/Starter/Plus/Ultra plans
Higgsfield pricing page: Free tier, Starter, Plus, Ultra plans

Step 2: Click Sign up. You can continue with Google, Apple, Microsoft, or use an email address. New accounts get a Free tier (limited use) plus access to ongoing free-generation campaigns (e.g. 5,000 free Soul 2.0 generations on Plus).

Higgsfield signup dialog with social login options
Welcome to Higgsfield: sign up and generate for free

Step 3: Choose a qualifying plan (Plus or above) to activate the 33-day unlimited window, then turn on the Unlimited toggle inside the model menu before generating — otherwise generations draw from your credit balance.

Using the Official REST API

The Higgsfield API uses an async queue pattern: submit a request, poll the status endpoint, then download the result. Authentication is Key:secret with the Authorization: Key header. Get your credentials from the Higgsfield Cloud dashboard (cloud.higgsfield.ai).

Note: Unlimited windows apply only on higgsfield.ai web app. REST API, MCP and CLI calls consume credits. MCP users can connect via https://mcp.higgsfield.ai/mcp and get a 3-day free trial plan.

Higgsfield MCP page advertising 3-day free trial
Connect MCP & access 3-day free trial plan

Code Examples

Install the official Python SDK (pip install higgsfield-client) or call the REST API directly with curl:

bash
curl -X POST 'https://platform.higgsfield.ai/bytedance/seedance/v1/pro/image-to-video' \
  --header 'Authorization: Key {your_api_key}:{your_api_key_secret}' \
  --header 'Content-Type: application/json' \
  --data '{
    "image_url": "https://example.com/your-image.jpg",
    "prompt": "Camera slowly pans across the landscape as clouds drift overhead"
  }'
python
import higgsfield_client

# pip install higgsfield-client
# env: HF_API_KEY / HF_API_SECRET or HF_KEY="key:secret"
result = higgsfield_client.subscribe(
    'bytedance/seedance/v1/pro/image-to-video',
    arguments={
        'image_url': 'https://example.com/your-image.jpg',
        'prompt': 'Camera slowly pans across the landscape as clouds drift overhead',
    },
)
print(result['video']['url'])